Phase 1: Package-Based Domain Infrastructure

ENTITIES:
- Package: +11 fields (SortOrder, IsActive, IsBasePackage, SupportsDaya/Direct,
  ActivationFee, DiscountMultiplier, MagicWalletMultiplier, MaxBalancesPerLeg,
  MaxNetworkLevel, MagicWalletMaxDeposit/Credit) + nav props
- PackageFeature: NEW junction entity (Package × ClubFeature) for feature DIFF
- ClubMembership: +4 fields (FirstActivationDate/PackageId, LastActivation/PackageId)
  ActivatedAt kept as [Obsolete] for backward compat
- ClubMembershipCycle: +PackageId FK (tracks which package per cycle)
- WeeklyCommissionPool: +PackageId FK (separate pool per package)
- UserCommissionPayout: +PackageId FK (payout per package)
- NetworkWeeklyBalance: +PackageId FK (balance per package)
- UserWalletChangeLog: +PackageId? FK (optional package tracking)

EF CONFIGS:
- PackageConfiguration: 11 new field configs + indexes
- PackageFeatureConfiguration: NEW (unique PackageId+ClubFeatureId)
- ClubMembershipConfiguration: First/Last Package FKs + LastActivationDate index
- ClubMembershipCycleConfiguration: Package FK
- WeeklyCommissionPoolConfiguration: Package FK + unique(WeekDef,Package)
- UserCommissionPayoutConfiguration: Package FK + unique(User,WeekDef,Package)
- NetworkWeeklyBalanceConfiguration: Package FK + unique(User,WeekDef,Package)
- UserWalletChangeLogConfiguration: Package FK (nullable)

DBCONTEXT:
- DbSet<PackageFeature> added to ApplicationDbContext + IApplicationDbContext

SYSTEMCONSTANTS:
- 9 constants marked [Obsolete] → moved to Package entity
  (ClubMembershipGiftValue, ClubActivationFee, BasePackageAmount, DayaLoanAmount,
   MagicWalletMultiplier, MagicWalletMaxDeposit, MagicWalletMaxCredit,
   CommissionMaxWeeklyBalancesPerLeg, CommissionMaxNetworkLevel)

Build: 0 errors, 610 warnings (40 new = expected Obsolete CS0618)

src/CMSMicroservice.Infrastructure/Persistence/Configurations/WeeklyCommissionPoolConfiguration.cs

@@ -17,6 +17,7 @@ public class WeeklyCommissionPoolConfiguration : IEntityTypeConfiguration<Weekly
         builder.Property(entity => entity.Id).UseIdentityColumn();
         
         builder.Property(entity => entity.WeekDefinitionId).IsRequired();
+        builder.Property(entity => entity.PackageId).IsRequired();
         builder.Property(entity => entity.TotalPoolAmount).IsRequired();
         builder.Property(entity => entity.TotalBalances).IsRequired();
         builder.Property(entity => entity.ValuePerBalance).IsRequired();
@@ -30,10 +31,16 @@ public class WeeklyCommissionPoolConfiguration : IEntityTypeConfiguration<Weekly
             .IsRequired()
             .OnDelete(DeleteBehavior.Restrict);
         
-        // Index یونیک برای WeekDefinitionId
-        builder.HasIndex(e => e.WeekDefinitionId)
+        // رابطه با Package
+        builder.HasOne(entity => entity.Package)
+            .WithMany()
+            .HasForeignKey(entity => entity.PackageId)
+            .OnDelete(DeleteBehavior.Restrict);
+        
+        // Index یونیک ترکیبی: هر هفته × هر پکیج فقط یک استخر
+        builder.HasIndex(e => new { e.WeekDefinitionId, e.PackageId })
             .IsUnique()
-            .HasDatabaseName("IX_WeeklyCommissionPool_WeekDefinitionId");
+            .HasDatabaseName("IX_WeeklyCommissionPool_WeekDef_Package");
         
         // Index برای IsCalculated
         builder.HasIndex(e => e.IsCalculated)